Home / 12,078.62-16,660.81-8,726.35

Finding the Fourth Proportional to 12,078.62, 16,660.81 and 8,726.35

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Solution

The fourth proportional to 12,078.62, 16,660.81 and 8,726.35 is: 12,036.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.62 : 16,660.81 = 8,726.35 : x
  2. Step 2: Convert to fraction form
    12,078.62/16,660.81 = 8,726.35/x
  3. Step 3: Cross multiply
    12,078.62x = 16,660.81 × 8,726.35
  4. Step 4: Simplify right side
    12,078.62x = 145,388,010.75
  5. Step 5: Solve for x
    x = 145,388,010.75/12,078.62
  6. Step 6: Final answer
    x = 12,036.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.